At the EuroBasket 2005, Toupane was assistant coach of the French men's national team, which won bronze at the tournament.

[4] At the start of the 2008/09 season, Toupane was coach of the first division club Élan Béarnais, but in mid-November 2008, he was sacked after six defeats in a row.

[6] In addition to his duties in the club, Toupane was head coach of the French men's U20 national team from 2009 to 2021.

[4] Over the years, his players in the U20 national team have included future European top players such as Antoine Diot, Kevin Séraphin, Thomas Heurtel, Andrew Albicy, Evan Fournier, Léo Westermann, Élie Okobo and Amine Noua.

[8][9] From 2014 to 2021, Toupane also coached the INSEP performance center team Centre Fédéral, which competes in the third-highest division, Nationale 1, in professional competitions.